Pro1 Technologies
P.O. Box 3377
Springfield, MO 65808-3377
Toll-Free: 888-776-1427
Web: www.pro1iaq.com
Hours of Operation: M-F 9 AM – 6 PM Eastern
Thermostat Application Guide
| Description | |
| Gas or Oil Heat | Yes |
| Electric Furnace | Yes |
| Heat Pump (No Aux. or Emergency Heat) | Yes |
| Heat Pump (With Electric Aux.) | Yes |
| Heat Pump (With Gas Aux.) | No |
| Multi-Stage Systems | No |
| Heat Only Systems – Floor or Wall Furnace | Yes |
| Cool Only Systems | Yes |
| High and Low Fan Speed | Yes |
| Millivolt | No |
| Emergency Heat | No |
| Conventional Single Stage Furnace | Yes |
| Geothermal | Yes |
Power Type
A trained, experienced technician must install this product. Carefully read these instructions. You could damage this product or cause a hazardous condition if you fail to follow these instructions.
Wall Locations
The thermostat should be installed approximately 4 to 5 feet above the floor. Select an area with average temperature and good air circulation.
Installation Tip
Pick an installation location that is easy for the user to access. The temperature of the location should be representative of the building.
Subbase Installation
For vertical mount put one screw on the top and one screw on the bottom. For horizontal mount put one screw on the left and one screw on the right.
Do not install thermostats in locations:
Installation Tip:
Electrical Hazard
Failure to disconnect the power before beginning to install this product can cause electrical shock or equipment damage.
Mercury Notice
All of our products are mercury-free. However, if the product you are replacing contains mercury, dispose of it properly. Your local waste management authority can give you instructions on recycling and proper disposal.
Align the 4 tabs on the subbase with corresponding slots on the back of the thermostat, then push gently until the thermostat snaps in place.
Battery Installation
Removing The Private Label Badge
Important
The low battery indicator is displayed when the AA battery power is low. If the user fails to replace the battery within 21 days, the screen will only show the low battery indicator but maintain all functionality. If the user fails to replace the batteries after an additional 21 days (days 22-42 since the first “low battery” display) the setpoints will change to 55˚F (Heating) and 85˚F (Cooling). If the user adjusts the setpoint away from either of these, it will hold for 4 hours and then return to either 55˚F or 85˚F. After day 63 the batteries must be replaced immediately to avoid freezing or overheating because the thermostat will shut the unit off until the batteries are changed. Gently slide a screwdriver into the bottom edge of the badge. Gently turn the screwdriver counterclockwise. The badge is held on by a magnet in the well of the battery door. The badge should pry off easily. DO NOT USE FORCE.
About The Badge
All of our thermostats use the same universal magnetic badge. Visit the company website to learn more about our free private label program.
| Terminal | 1 Heat 1 Cool Conventional System | 1 Heat 1 Cool Heat Pump System | 2 Heat 1 Cool Heat Pump System |
| R | Transformer power (cooling) | Transformer power (cooling) | Transformer power (cooling) |
| C | Transformer common | Transformer common | Transformer common |
| B | Energized in heating | Heat pump changeover valve energized in heating | Heat pump changeover valve energized in heating |
| O | Energized in cooling | Heat pump changeover valve energized in cooling | Heat pump changeover valve energized in cooling |
| GL | Fan Relay, Low | Fan Relay, Low | Fan Relay, Low |
| GH | Fan Relay, High | Fan Relay, High | Fan Relay, High |
| W | First stage of heat | N/A | Second stage of heat |
| Y | First stage of cool | First stage of heat & cool | First stage of heat & cool |
This thermostat is shipped from the factory to operate a conventional heating and cooling system. This thermostat will also operate a heat pump system. See the “heat pump” configuration step on page 10 of this manual to configure the thermostat for heat pump applications. Failure to disconnect the power before beginning to install this product can cause electrical shock or equipment damage.All components of the control system and the thermostat installation must conform to Class II circuits per the NEC Code.
C Terminal
The C (common wire) terminal does not have to be connected when the thermostat is powered by batteries.
Wire Specifications
Use shielded or non-shielded 18-22 gauge thermostat wire. When connecting the T631-2 to a PTAC, refer to the PTAC manufacturer’s instructions to enable remote thermostat operation.
Electric: The thermostat operation jumper pin should be put in the ELEC position. This setting allows the thermostat to operate the fan during a call for heat. Most PTAC systems will require ELEC Fan Operation Setup.
Gas: For systems that control the fan during a call for heat put the jumper pin into the GAS position.
Fahrenheit/Celsius Display
Select F or C with the jumper pin to select desired display.
Compressor Short Cycle Delay
The compressor’s short cycle delay protects the compressor from short cycling. This feature will not allow the compressor to be turned on for 5 minutes after it was last turned off. Using the jumper on the back of the thermostat, selecting ON will not allow the compressor to be turned on for 5 minutes after the last time the compressor was on. Selecting OFF will remove this delay.
Important
The RESET button must be pressed after changing any switch or jumper pin setting. Batteries must be installed for this operation.
| Tech Setup Steps | LCD Will Show | Adjustment Options | Default | |
| Room Temperature Calibration | This feature allows the installer to change the calibration of the room temperature display. For example, if the thermostat reads 70˚ and you would like it to read 72˚ then select +2. | CA 0 | You can adjust the room temperature display to read up to 4˚above or below the factory calibrated reading. | 0˚F |
| Change Over Valve Selection | Select 0 for a changeover valve that energizes in cooling. Select b for a change over valve that energizes in heating. | C0 0 | 0 for cooling changeover valve. b for heating changeover valve. | 0 |
| Heat Pump | When turned on the thermostat will operate a heat pump. Y will be the first stage of heat & cool, W will be the second stage of heat. | HU 0F | OFF configures the thermostat for non heat pump systems. ON configures the thermostat for heat pump systems. | OFF |
| Heating Temperature Setpoint Limit | This feature allows you to set a maximum heat setpoint value. The setpoint temperature cannot be raised above this value. | HE 90 | 45.0˚ – 90.0˚ F 7.0˚ – 32.0˚ C | 90˚F |
| Cooling Temperature Setpoint Limit | This feature allows you to set a minimum cool setpoint valve. The setpoint temperature cannot be lowered below this value. | CL 45 | 45.0˚ – 90.0˚ F 7.0˚ – 32.0˚ C | 45˚F |
Typical 1H/1C Heat Pump System: 2-Speed Fan
Most PTAC systems support two-speed fan operation. In a single-speed fan PTAC system or conventional single-speed fan system, a jumper should be installed between GL and GH on the thermostat.
| Swing Settings | LCD Will Show | Adjustment Options | Default | |||||
| Cooling Swing (SYSTEM COOL) | The swing setting, often called “cycle rate”, “differential” or “anticipation” is adjustable. A smaller swing setting will cause more frequent cycles and a larger swing setting will cause fewer cycles. | 08 | The cooling swing setting is adjustable from 0.2˚ to 2˚. For example: A swing setting of 0.5˚ will turn the cooling on at approximately 0.5˚ above the setpoint and turn the cooling off at approximately 0.5˚ below the setpoint. | 0.8˚ | ||||
| Heating Swing (SYSTEM HEAT) | The swing setting, often called “cycle rate”, “differential or “anticipation” is adjustable. A smaller swing setting will cause more frequent cucles and a larger swing setting will cause fewer cycles. | 08 | The heating swing setting is adjustable from 0.2˚ to 2˚. For example: A swing setting of 0.5˚ will turn the heating on at approimately 0.5˚ below the setpoint and turn the heating off at approximately 0.5˚ above the setpoint. | 0.8˚ | ||||
The second stage of Heat will turn on at 2x the swing set. The second stage will turn off when 1x the swing is reached. For example, if the swing set is 0.8˚ for heating and the thermostat is set at 70˚ F, the first stage will turn on at approximately 69.2˚ F. The second stage will turn on at 68.4˚F and the first will turn off at 70.8˚ F.
Download Manual:
Pro1 Technologies T631-2 Non-Programmable Thermostat Installational Guide
OTHER MANUALS
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